Fuel-feed system



Jan. 5 192s. 1,568,936

-H. WATERSTONE FUEL FEED SYSTEM Filed Dec. 16. 1922 2 Sheets-Sheet 1 enry ha/Zersfo we mvm faajlf m van-um HQ WATERSTONE FUEL FEED, SYSTEM Filed beetle. 1922 j 2 sh ets-sheet 2 Jan. 5 1926. 1,568,936-

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Patented Jan. 5, 1926.

{UNITED STATES PATENT} OFFICE.

FUEL-FEED SYSTEM.

Application filed DecemberlG, 1922. Serial No. 607,428.

To all whom it may concern:

Be it known that I, HENRY VVA'IERSTONE,

a citizen of the United States, residing at Montgomery, in the county of Fayette and State of West Virginia, have invented new and useful Improvements in Fuel-Feed Systems, of which the following is a specification.

Thisinvention relates ,to a vacuum tank for internal combustion motors, the general object of the invention being toprovide a float controlled valve for controlling the suction line. from the carbureter to the said tank.

This invention also consists in certain other features of construction and in the combination and arrangement of the sev eral parts, to be hereinafter'fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claim.

In describing my invention in detall, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views,vand in which ze Figure 1 is a view showing the invention in use.

Figure 2 is a longitudinal sectional view through the tank.

Figure 3 isa section on line 3-3 of Figure 2. j

Figuresl and 5 are detail views.

In these views 1 indicates a tank which has its lower end closed and its upper end provided with a cover 2 which is bolted to a flange 3 at the top of the tank. A partition l divides the tank into upper and lower chambers and said partition is provided with an L-shaped discharge spout 5 which is controlled by a flap valve 6. Thebottom of the tank is provided with a drain cock 7 and the pipe 8 connects the lower part of the tank with the carbureter. A pipe 9rpasses through the cover 2 and this pipe is adapted to be connected with the supply tank in any desired manner. A pipe 10 is also carried by the cover and this pipe is connected by the tube 11 with the carbureter of the motor, as shown, so that the suction created by the moving pistons will form a vacuum in the upper chamber of the tank, this vacuum causing the valve 6 to close and thus shut off the lower chamher from the upper chamber so that fuel i'nto't he upper chamber through the pipe 9. A valve 12 normally closes the lower end of pipe 10 through means of the spring 13 which engages one end of the lever 14 which carries the valve 12 at its other end and which is pivoted to a frame 15, as shown at 16. This frame is connected with the cover 2. A bell crank lever 16 is also pivotally secured to the frame 15 and onepart of this bell crank lever is adapted to engage the lever 14 so as to move the same against the action of the spring 13 and open the valve.

12. This bell crank lever 16 isactuated by the lowering of the float 17 in the upper chamber which engages a projection 18 on the rod 19 so as to move the rod 19 downwardly and thus move the bell crank lever 16' as said rod is fastened to said lever. A projection 20 on the rod is engaged by the float in its upward movement. A tube 21 is connected with the upper end of the bottom chamberso as to prevent a vacuum being formed therein when the liquid is being discharged therefrom.

From the above it will be seen that when the motor is in operation and there is no fuel in the upper chamber, the float will cause the bell crank lever 16 to open the valve 12, thus permitting a vacuum to be formed in the upper chamber thus drawing fuel thereinto from the main tank. When the fuel in the upper chamberreaches a certain level the float will engage the projection 20 and thus raise the arm 16, and permit the valve 12 to close. As soon as this takes place the valve 6 will open under the weight of the fuel so that the fuel in the upper chamber will flow into the lower chamber and will then pass to the carbureter through the pipe 8. As soon as the level of fuel in the upper chamber reaches a point where the float will again engage the projection 18 the valve will open to permit a vacuum to take place in the upper chamber and thus the operation will be repeated.

The tube 11 is connected with the carbureter adjacent the flange thereof and just ahead of the butterfly valve. This arrangement of parts will prevent a vacuum bein created in the carbureter. A small hole 22 is formed in the lid of the vacuum tank.

It is thought from the foregoing descrip tion that the advantages and novel features of my invention will be readily apparent.

I desire it to be understood that I may will be drawn from the main supply tankmake changes in the construction and in the combination and arrangement ofithe several parts, provided that such changes fall within the scope of the appended claim.

What I claim is In a vacuum tank, a yoke-shaped frame connected with the cover thereof and havend of the lever and the cover for holding the "al ve closed, a bell crank pivoted on the frame and engaging the lever adjacent its spring, end, a rod connected with the bell crank lever and having projections thereon and a float on the rod for engaging the projections.

In testimony whereof I affix my signature.

HENRY \VATERSTONE. 

